Matches 1 - 41 out of 41
Match Document Document Title
6816881 Method and apparatus for inter-application communication in wireless networks  
A method for providing inter-application communication between a sending device and one or more receiving devices in a wireless network comprises the steps of: (i) at the sending device, tagging a...
6385455 Method and system in a transceiver for selecting a communication parameter for communicating with a concentrated subscriber unit  
In a method in a transceiver for selecting a communication parameter for communicating with a concentrated subscriber unit, wherein the concentrated subscriber unit includes a plurality of...
6286122 Method and apparatus for transmitting DTX--low state information from mobile station to base station  
A method for operating a mobile station that includes the steps of, prior to transmitting a burst in a last frame before entering a discontinuous transmission (DTX) mode, generating a message word...
5881101 Burst serial tone waveform signaling method and device for squelch/wake-up control of an HF transceiver  
A device and method for controlling HF single side band radio squelch operation in which a serial tone burst indicates the start and end of a transmission and identifies an on-going transmission....
5875401 Method and apparatus for initiating wireless messages  
A communications system allows special messages to be transmitted to a wireless device subscriber if certain conditions are met. Identification information authenticating the sender may be sent...
5864762 Operating a trunked communication system in transmission and message trunked modes  
A digitally trunked radio repeater system provides substantial improvements in timeliness and reliability. The mobile radio transceivers transmit channel requests on the control channel at 9600...
5732125 Method of capturing a control channel for calls following an emergency call  
To perform control of a mobile telephone system which uses a dedicated control channel type multichannel access system, when an emergency telephone call is made from a mobile telephone to the...
5724656 Method and apparatus for providing an improved caller interface in a fixed cellular communications system  
In a fixed cellular telephone system, an improved caller interface is provided wherein the taking of a standard wireline telephone set off-hook triggers the establishment of a voice path between...
5574788 Trunked radio repeater system  
A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses...
5408680 Single channel autonomous digitally trunked RF communications system  
A single channel autonomous trunking ("SCAT") RF repeater transmits and receives on a single duplex RF channel. The repeater operates alternately in a control channel mode and in an assigned...
5369783 Dynamic regrouping in a trunked radio communications systems  
In a trunked radio frequency communications system, a dynamic regrouping scheme includes an effective user interface, automatic support of multi-site systems, the capability to program individual...
5287549 Commuication device and method using transceiver squelch control  
An audio squelch control for transceiver stations in which all transceivers are initially in a Call mode with the squelch control turned on. While in the Call mode, the squelch control is turned...
5274838 Fail-soft architecture for public trunking system  
A site architecture for a trunked radio frequency communications system provides better fault tolerance capabilities than are available from architectures including redundant hardware. During...
5265093 Hardware interface and protocol for a mobile radio transceiver  
A system and method for communicating control signals between a digital mobile transceiver, a digital control head, and a mobile data terminal over a common serial peripheral bus uses a message...
5247703 Transceiver with off hook scanning  
A transceiver that allows scanning to occur with the microphone in an off hook position. The transceiver includes a main unit, external microphone, and hook for holding the microphone. The external...
5206863 Processor-to-processor communications protocol for a public service trunking system  
A downlink between a communications dispatch console and a digitally trunked radio repeater system site controller efficiently transfers message data between the site controller and the console...
5175866 Fail-soft architecture for public trunking system  
A site architecture for a trunked radio frequency communications system provides better fault tolerance capabilities than are available from architectures including redundant hardware. During...
5128930 Processor-to-processor communications protocol for a public service trunking system  
A downlink between a communications dispatch console and a digitally trunked radio repeater system site controller efficiently transfers message data between the site controller and the console...
5125102 Trunked radio repeater system including synchronization of a control channel and working channels  
A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses...
5117501 Dynamic regrouping in a trunked radio communications system  
In a trunked radio frequency communications system, a dynamic regrouping scheme includes an effective user interface, automatic support of multi-site systems, the capability to program individual...
5109543 Hardware interface and protocol for a mobile radio transceiver  
A system and method for communicating control signals between a digital mobile transceiver, a digital control head, and a mobile data terminal over a common serial peripheral bus uses a message...
5086506 Radio trunking fault detection system with power output monitoring and on-air monitoring  
A trunked radio frequency (RF) repeater system for public service trunking (PST) or the like includes a fault detection system having an RF output power monitoring, over-the-air RF monitoring and...
5077828 RF channel expansion in a trunked radio communications system  
In a trunked radio frequency communications system, an arrangement dynamically "expands" or extends the frequency allocation table stored within the "personality" defining non-volatile storage...
5054042 Device for the setting up and routing of telephone calls between subscribers of a radio network and/or of a wired telephone network  
A device for setting up and routing telephone calls between subscribers of a radio-telephone network and/or a wired telephone network utilizes an automatic telephone exchange which is wired to the...
EP0207948B1 INTERNALLY REGISTER-MODELLED, SERIALLY-BUSSED RADIO SYSTEM  
Abstract not available for EP0207948 Abstract of corresponding document: US4637022 In accordance with the present invention, there is provided a register-modelled radio system comprising a...
4939746 Trunked radio repeater system  
A digital trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses a...
4926496 Method and apparatus for infrequent radio users to simply obtain emergency assistance  
A digital mobile radio transceiver allows even the most unsophisticated user to simply and easily obtain emergency communications. The transceiver is programmed with "personality" data specifying...
4905302 Trunked radio repeater system  
A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses...
4905234 Apparatus and method for transmitting digital data over a radio communications channel  
A digital radio RF signalling protocol communicates either digitized voice or digital data signals and indicates the type of information being communicated to the receiver. Multiple repeats of...
4903262 Hardware interface and protocol for a mobile radio transceiver  
A system and method for communicating control signals between a digital mobile transceiver, a digital control head, and a mobile data terminal over a common serial peripheral bus uses a message...
4856083 Method of connecting a cordless telephone by radio  
A method of connecting a cordless telephone by radio without using control channels selects priority radio channels from radio channels which are shared by cordless telephones and assigns each of...
4835731 Processor-to-processor communications protocol for a public service trunking system  
A downlink between a communications dispatch console and a digitally trunked radio repeater system site controller efficiently transfers message data between the site controller and the console...
4829554 Cellular mobile telephone system and method  
A cellular mobile telephone system and method in which channel assignment and telephone call routing are controlled by a central control station and in which each communications channel is...
4821292 Adaptive limiter/detector which changes time constant upon detection of dotting pattern  
A limiter/detector which takes advantage of the characteristics of the dotting pattern preceding each message in the General Electric Public Service Trunking System shortens bit synchronization...
4811380 Cellular radiotelephone system with dropped call protection  
An improved cellular telephone communication system is described having operational steps which prevent a call from being dropped due to a radiotelephone not receiving a handoff instruction from...
4691338 Line switching circuit for cordless telephone  
A line switching circuit for a communications system which includes a cordless telephone and gives priority of use to an ordinary telephone associated with the cordless one is disclosed. The...
4654881 Remote control system having symmetrical tone, send/receive signaling circuits for radio communications  
The remote control system having symmetrical signaling circuits for radio communications is coupled to a single wire line/audio channel and permits two or more units, base stations and/or remote...
4644105 Mobile telephone controller switch  
A communication switch circuit is provided by which quasi-duplex communication may be had between a telephone party and a mobile unit in a simplex two-way radio communication system. Specifically,...
4637022 Internally register-modelled, serially-bussed radio system  
In accordance with the present invention, there is provided a register-modelled radio system comprising a plurality of register-modelled processors having addressable registers for modelling the...
4618998 Radio communications control system which automatically returns the system to the speech channel  
A radio communications system having a call channel and a plurality of speech channel one of which is to be selected, is provided with means for returning to a last used speech channel in the event...
4517561 Selective call, paging and priority signalling system  
A selective calling, paging and priority signalling system for two way communications between at least one primary and a plurality of remote stations. An automatic selective calling mode is...
Matches 1 - 41 out of 41